26622624644 has 48 divisors (see below), whose sum is σ = 58406764416. Its totient is φ = 10315123200.

The previous prime is 26622624619. The next prime is 26622624661. The reversal of 26622624644 is 44642622662.

It is a happy number.

It is a super-2 number, since 2×26622624644² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 26622624595 and 26622624604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183029 + ... + 294524.

It is an arithmetic number, because the mean of its divisors is an integer number (1216807592).

Almost surely, 2^26622624644 is an apocalyptic number.

It is an amenable number.

26622624644 is an abundant number, since it is smaller than the sum of its proper divisors (31784139772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26622624644 is a wasteful number, since it uses less digits than its factorization.

26622624644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477756 (or 477754 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 44.

The spelling of 26622624644 in words is "twenty-six billion, six hundred twenty-two million, six hundred twenty-four thousand, six hundred forty-four".